JPH04275122A - Mold for molding disc - Google Patents

Mold for molding disc

Info

Publication number
JPH04275122A
JPH04275122A JP10491491A JP10491491A JPH04275122A JP H04275122 A JPH04275122 A JP H04275122A JP 10491491 A JP10491491 A JP 10491491A JP 10491491 A JP10491491 A JP 10491491A JP H04275122 A JPH04275122 A JP H04275122A
Authority
JP
Japan
Prior art keywords
sprue
pin
center
thrusting
mold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10491491A
Other languages
Japanese (ja)
Inventor
Ikuo Asai
Original Assignee
Meiki Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Meiki Co Ltd filed Critical Meiki Co Ltd
Priority to JP10491491A priority Critical patent/JPH04275122A/en
Publication of JPH04275122A publication Critical patent/JPH04275122A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/26Moulds
    • B29C45/263Moulds with mould wall parts provided with fine grooves or impressions, e.g. for record discs

Abstract

PURPOSE: To easily separate and remove a sprue even if the sprue sticks to the projection provided to the leading end of a sprue ejector when the sprue is taken out of a mold by constituting the sprue ejector of a sprue thrusting-out pin and the center pin piercing the same.
CONSTITUTION: A sprue thrusting-out pin 16 having a center hole is inserted in the center of a punch 11 in the longitudinal direction thereof in a freely slidable manner and a center pin 17 is inserted in the center hole of the pin 16 in a freely slidable manner. The left end part of the sprue thrusting-out pin 16 is fixed to a movable connection plate 18. At the time of the opening of a mold, the sprue sticking to the punch 11 and the tip of the center pin 17 is easily removed by the sprue thrusting-out pun 16.
COPYRIGHT: (C)1992,JPO&Japio
JP10491491A 1991-03-01 1991-03-01 Mold for molding disc Pending JPH04275122A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10491491A JPH04275122A (en) 1991-03-01 1991-03-01 Mold for molding disc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10491491A JPH04275122A (en) 1991-03-01 1991-03-01 Mold for molding disc

Publications (1)

Publication Number Publication Date
JPH04275122A true JPH04275122A (en) 1992-09-30

Family

ID=14393377

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10491491A Pending JPH04275122A (en) 1991-03-01 1991-03-01 Mold for molding disc

Country Status (1)

Country Link
JP (1) JPH04275122A (en)

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